Vacuum pump operating instructions

01 - Check the oil level, in order to stop the pump when it is advisable to note oil to oil the center. Low oil seal effect to the exhaust valve can not, affect the vacuum degree. Too high, may cause the atmosphere when starting injection. Operation, the oil level was increased, belongs to the normal phenomenon. With provisions brand of clean vacuum water pump oil, oil from oil hole to join. Refueling is finished, should spin on a plug. Oil should be filtered, to avoid clutter into, block oil hole. Vacuum pump can be combusted in the atmosphere or any vacuum starting next time. inlet solenoid valve such as loading, should with water pump action at the same time. When the environment temperature is too high, the oil temperature, viscosity, saturation vapour pressure will increase, will cause extreme vacuum declined, especially with a thermocouple meter measured all the pressure. Such as strengthening the ventilation cooling, or improve the oil pump performance, limit the vacuum can be improved. Check the limiting vacuum of vacuum pump will be subject to compression type mercury vacuum gauge, such as the meter calibration, through full drainage pump temperature to achieve stability, pump inlet and meter connected directly, run 30 minutes, will reach the limit of vacuum. Total pressure gauge measurement and the values of the oil pump and the vacuum gauge, gauge error, error sometimes can be very big, can only for reference. Such as relative humidity is higher, or gas is pumped contains more condensable vapor, on being connected to the container, after appropriate open the gas ballast valve, 20 ~ 40 minutes after close the gas ballast valve. , before stop the pump valve can be KaiQi town light exercise for 30 minutes, to extend the life of the pump oil. Vacuum pump oil selection: pump oil viscosity affects the starting power and the limits of the vacuum pump, high viscosity when good for vacuum degree, starting power is larger. Oil in the pump under the temperature of saturated steam pressure will affect the limit the total pressure of the pump, the lower the better. High speed of vacuum pump oil and 3 # diffusion pump oil viscosity is 1 large vacuum pump oil, saturated vapor pressure was lower than those of no. 1 vacuum pump oil, the 3 # diffusion pump oil prices higher. Specific what to choose oil, can choose according to above is introduced combined with the specific application requirements. ( 1) In general, all hope that the total pressure in 6 x10 - More than 2, made in the application of the vacuum pump oil at a high speed. 4 liters per second small pump can also be used under vacuum pump 1 generation, more than 8 litres per second straight league water pump available 3 # diffusion pump oil generation. ( 2) If the requirement for vacuum degree is not high, and oil pollution changed frequently, vacuum pump oil supply difficulties, 50 # machine oil can be used instead. ( 3) If the environment temperature is low, starting difficulty, limiting vacuum requirement is not high, can use a slightly lower real curtilage pump oil viscosity or machine oil

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